Properties

Label 481338.bc
Number of curves $2$
Conductor $481338$
CM no
Rank $1$
Graph

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Show commands: SageMath
E = EllipticCurve("bc1")
 
E.isogeny_class()
 

Elliptic curves in class 481338.bc

sage: E.isogeny_class().curves
 
LMFDB label Cremona label Weierstrass coefficients j-invariant Discriminant Torsion structure Modular degree Faltings height Optimality
481338.bc1 481338bc2 \([1, -1, 0, -1363137, 613093949]\) \(-117615821673598875/40164914816\) \(-95658488217122688\) \([]\) \(9144576\) \(2.2299\) \(\Gamma_0(N)\)-optimal*
481338.bc2 481338bc1 \([1, -1, 0, 9663, 3149757]\) \(30541139380125/1331551010816\) \(-4350177152335872\) \([]\) \(3048192\) \(1.6805\) \(\Gamma_0(N)\)-optimal*
*optimality has not been determined rigorously for conductors over 400000. In this case the optimal curve is certainly one of the 2 curves highlighted, and conditionally curve 481338.bc1.

Rank

sage: E.rank()
 

The elliptic curves in class 481338.bc have rank \(1\).

Complex multiplication

The elliptic curves in class 481338.bc do not have complex multiplication.

Modular form 481338.2.a.bc

sage: E.q_eigenform(10)
 
\(q - q^{2} + q^{4} + 4 q^{7} - q^{8} - q^{13} - 4 q^{14} + q^{16} + q^{17} + 7 q^{19} + O(q^{20})\) Copy content Toggle raw display

Isogeny matrix

sage: E.isogeny_class().matrix()
 

The \(i,j\) entry is the smallest degree of a cyclic isogeny between the \(i\)-th and \(j\)-th curve in the isogeny class, in the LMFDB numbering.

\(\left(\begin{array}{rr} 1 & 3 \\ 3 & 1 \end{array}\right)\)

Isogeny graph

sage: E.isogeny_graph().plot(edge_labels=True)
 

The vertices are labelled with LMFDB labels.